PLATE XX. 



I, a-g. Bryiim treleasci. 



I, a. Entire plant, natural size. 



I, b, b. Leaves ( X 13)- 



I, c, c. Transverse section of a leaf ( X I35)- 



T, d. Basal areolation of the same ( X I35)- 



I, e. Marginal areolation in the lower part ( X I30- 



I, /. Areolation of the apex ( X 135)- 



1, g: Young capsule, in moist state ( X I3)- 



2, a-k. Brv'tni agattuense. 



I, a. Entire plant, natural size. 



1, b, b. Stem-leaves ( X ^S)- 



3, c. Branch-leaf ( X 13)- 



2, d. Basal areolation ( X 135)- 



2, c. Areolation in the middle ( X I35)- 



2, t. Areolation of the apex ( X I35)- 



2, g. Capsule unripe, in dry state (X 13)- 



2, //. Capsule ripe, in moist state ( X 13)* 



(363) 



